Yeah, I think this is true for attractions or objects that aren't fungible or experiences that guests can't discern between. The problem is that, as Neo said, guests would probably decide one of the two houses is better and either prioritize that or, worse, try to do both. If there was a way to build two houses with a single entrance and have guests unaware there were two experiences... maybe that could work? But it's the difference between building two McDonald's next two one another vs. having one McDonald's with two kitchens.